28-01-2011, 05:03 PM
ABSTRACT
The DS - CDMA is expected to be the major medium access technology in the future mobile systems owing to its potential capacity enhancement and the robustness against noise. The CDMA is uniquely featured by its spectrum spreading randomization process employing a pseudo-noise (PN) sequence, thus is often called the spread spectrum multiple access (SSMA). As different CDMA users take different PN sequences, each CDMA receiver can discriminate
and detect its own signal, by regarding the signals transmitted by other users as noise-like interferences.
In this project Direct sequence principle based CDMA transmitter and
receiver will be implemented in VHDL. Modelsim Xilinx Edition 6.2g tool will be used for functional simulation and logic verification at each block level and system level.
